Brb alternatives

WhatsApp Messenger is a FREE messaging app available for iPhone, Android, and other smartphones. WhatsApp uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message and call friends and family. Switch from SMS to WhatsApp to send and receive messages, calls, photos, videos, documents, and Voice Messages.

Asynchronous Meetings, Voice Messaging, and Screen Sharing for Distributed Teams. Yac is an asynchronous collaboration platform for remote teams. On Yac, short-form voice messages from your teammates let you stay in sync without being derailed by a meeting. No links, scheduling or timezone management needed.

Cloud based phone system and call center software all-in-one with Cloud Telephony Integrations (CTI) with your favorite CRM & Helpdesk software. No hardware or deskphone needed; instant setup.

VocalBird is an extension enabling you to record audio messages on any page. You then get a link to your message that you can share. You get the productivity boost of async messages, the personal touch of audio, and the flexibility to use them anywhere!

No time for lengthy text? Voy is an omnichannel voice messaging that lets you say what you want in any context.

Voice Drop is a Chrome extension that gives you the choice to speak where your only option is to type. It automatically places a record button on every long text field so you can record your message. Once you are done, people can click on a link and listen.